Journal ArticleDOI
Electronic structure of amorphous semiconductors
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In this paper, a wide range of non-crystalline materials, such as the elemental and compound amorphous semiconductors, liquid semiconductor, and oxide glasses, are discussed.Abstract:
We review the bonding in a wide range of non-crystalline materials, such as the elemental and compound amorphous semiconductors, liquid semiconductors and, briefly, some oxide glasses and amorphous silicon dioxide. The review concentrates on the experimental determination of electronic structure from photoemission, optical spectra and core spectra and on its theoretical description, particularly using tight-binding methods. The review also describes the bonding at defects in amorphous semiconductors and in particular that of dopants and hydrogen in hydrogenated amorphous silicon (a-Si:H).read more
Citations
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Phase Change Materials and Their Application to Nonvolatile Memories
TL;DR: Phase change materials are materials that exist in at least two structurally distinct solid phases, an amorphous and one (or more) crystalline phases that can be used to store information in technological applications if it is possible to switch the material repeatedly between the two phases and if both phases are stable at operating temperature.
Journal ArticleDOI
Tight-binding modelling of materials
TL;DR: This paper considers a representative selection of the huge number of systems which have been studied using tight-binding, identifying the physical characteristics that favour a particular Tight-binding method, with examples drawn from metallic, semiconducting and ionic systems.
Journal ArticleDOI
Atomistic theory of transport in organic and inorganic nanostructures
Alessandro Pecchia,Aldo Di Carlo +1 more
TL;DR: In this paper, the authors review the principal methods used to formulate quantum transport based on local orbital sets via transfer matrix and Green's function (GF) techniques, and report on the most recent progresses of the field including the application of the self-consistent non-equilibrium GF formalism.
Journal ArticleDOI
Amorphic diamond films produced by a laser plasma source
TL;DR: In this paper, a detailed characterization of the amorphic diamond is presented, showing that the combination of an optical band gap of 1.0 eV with a grain size of 100-200 A places this material far outside the range of possibilities available to the model of graphitic islands.
Journal ArticleDOI
Microscopic theory of nanostructured semiconductor devices: beyond the envelope-function approximation
TL;DR: In this article, the authors report on microscopic theories to describe nanostructured semiconductor devices and compare them with other approaches, showing how these microscopic methods overcome the limitations imposed by the simplified approaches based on envelope function approximations and in the meantime keep the computational cost low.
References
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Book
Electronic processes in non-crystalline materials
TL;DR: The Fermi Glass and the Anderson Transition as discussed by the authorsermi glass and Anderson transition have been studied in the context of non-crystalline Semiconductors, such as tetrahedrally-bonded semiconductors.
BookDOI
Amorphous and liquid semiconductors
TL;DR: In this article, the nature of the amorphous state and the electronic properties of the Amorphous Semi-conductors have been investigated in the context of liquid semiconductors.
Journal ArticleDOI
An Extended Hückel Theory. I. Hydrocarbons
TL;DR: The Huckel theory, with an extended basis set consisting of 2s and 2p carbon and 1s hydrogen orbitals, with inclusion of overlap and all interactions, yields a good qualitative solution of most hydrocarbon conformational problems.
Journal ArticleDOI
Simplified LCAO Method for the Periodic Potential Problem
John C. Slater,G. F. Koster +1 more
TL;DR: In this paper, the LCAO interpolation method was used as an interpolation technique in connection with more accurate calculations made by the cellular or orthogonalized plane-wave methods.
Journal ArticleDOI
Norm-Conserving Pseudopotentials
TL;DR: In this article, a simple procedure to extract pseudopotentials from ab initio atomic calculations is presented, which yield exact eigenvalues and nodeless eigenfunctions which agree with atomic wave functions beyond a chosen radius.